Automatic safety control.



W. W. DICK.

AUTOMATIC SAFETY CONTROL.

APPLICATION FILED MAR. 5. 19|5..

Patented Nov. 19, 1918.

WILLIAM 'w.-'1 IcK, or EVANSVILLE, INDIANA.

. AUTOMATIC SAFETY CONTROL.

' Specification of Letters I'atent. Patented Nova 19, 1918.

Application filed March 5, 1915. Serial m. 12,275.

To all whom it may concern:

Be it known that 1, WILLIAM W. DICK, a citizen of the United States, and resident of the city of Evansville, State of Indiana, have invented certain new and useful Improvements in Automatic Safety Controls for Air-Brakes, of which the following is a full and accurate description, reference being had to the accompanying drawing for a more comprehensive understanding of my device.

My invention relates to automatic safety controls for air brakes and consists of the novel features and combination of parts herein shown and described and claimed in the appended claims.

Figure 1 of the drawings is a side elevation of my device shown attached to the bottom of the section of a car.

Fig. 2 is an end view of my device taken through line 2-2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a sectional view of the brackets and horizontal bar of my device at their point of juncture, a part of the horizontal bar being broken away.

Fig. 4 is a horizontal sectional view of a portion of my device at the same point as Fig. 3.

Fig. 5 is a detailed view of the valve of my device showing a portion of the branch pipe thereof broken away.

The object of my device is to provide means for automatically and instantaneously setting the air brakes of a train of cars when one or more of the wheels of the car leave the rails and I obtain this result by providing a shoe which is carried a short distance above the rails of a railroad track and so related to the train service pipe that when the shoe comes in contact with an obstruction a valve in the train service pipe is instantly opened thereby setting the air brakes. For a more complete understanding of my device reference may be had to the accompanying drawing in which the reference numerals 1 designates the bottom of a car; 2 one of the rails of a railroad track; 3-3 the supporting bracket for my device; 4 the branch pipe connecting the train service pipe with the valve located in housing 5. 6 and 7 are dependent bars supporting shoe 8, bar 7 being for the purpose of bracing the shoe 8 in order to retain it in its proper position. 9 is a lug carried by bar 6 at the upper end thereof which projects slightly into the apex formed by bars 33 and is for the purpose of holding bar 6 in a perpendicular position, thereby preventing the opening of the valve in housing 5 by the swinging of the shoe 8 caused by the operation of the train. 10 is a horizontal bar pivotally mounted in the apex of the brackets formed by bars 3-3 and carries intermediate its ends, a valve in housing 5.

The operation of my device is as follows: When one or more of the wheels of a car leave the rails the shoe 8 necessarily comes in contact with the rail thereby tipping it backwardly into the position shown by dotted lines in Fig. 1, thereby partially rotating bar 10 which opens the valve in its housing 5 and releases the air in the train service pipe, thereby setting'the brakes.

Having thus described my invention what I claim is:

l. The combination with a train service pipe of a branch pipe, a bar carried intermediate the bottom of a car and the rails of a railroad track, a valve carried by said pipe, brackets supporting said bar, said bar being pivotally mounted therein, a dependent bar carried by said first named bar at either end thereof, lugs carried by the top of and lying at right angles to the dependent bars and extending into the angles of said brackets, said valve being operably related to said service pipe.

2. The combination with a train service pipe of a branch pipe, a bar carried horizontally intermediate the bottom of a car and the rails of a railroad track, a valve carried by said bar, brackets supporting said bar, said bar being pivotally mounted therein, a dependent bar carried by said first named bar, a lug carried by the top of and lying at right angles to the dependent bar and extending into the angle of said bracket, said valve being operatively related to said service pipe.

3. The combination with a train service pipe of a branch pipe, at bar carried horizontally intermediate the bottom of a car and the rails of a railroad track, a valve carried by said bar, said valve having con nection with said train service pipe, said bar being pivotally mounted in brackets, a de- In testimony whereof I afiix my signature pendent bar carried by'eithei' endpf said i' ri' pi esenc'ehf-tWo"w-itnesses. first named bar; a lug 'cafriedbythe' tofJ of-- WrL-IJIAM,W-,DICK

and lying at right angles to thedp'endent bar and adapted; hogan-gage, said Witnegsegag brackets, said valve being operable by a F. C. GORE, swinging motion of said dependent rba r'si' MARGUERITE BOERKE.

cnbiekot'thisbatgnt. maybe obtained imam ."centsxamn?hxya ng the Commissioner of P Washington, :9. 0. 

